Dogwood, you're on the right track.

Chuck, I agree fuel can't be controlled. Usually fuel ends up controlling the modeller, too high a nitro and you have consistancy problems and flame outs...

Flyboy Dave, I disagree, you'd never get that Nelson powered mini shrike in the air long enough to get 2 passes for the radar, that's the neat thing about speed, you need finesse to get it consistently. I'd like to see a set up like that though, the take off would be wild, imagine the torque roll when you let it go...